Edwaed weston



(No Model.)

B. WESTON.

. DYNAMO ELECTRIC MACHINE. No. 255,366. Patented Man- 21.1882.

fittest: Inventor:

UNITED STATES PATENT OFFICE.

EDWARD WESTON, OF NEWARK, NEIV JERSEY, ASSIGNOR TO THE UNITED STATESELECTRIC LIGHTING COMPANY, OF NEYV YORK, N. Y.

DYNAMO-ELECTRIC MACHINE.

SPECIFICATION forming part of Letters Patent No. 255,366, dated March21, 1882,

Application filed July 12, 1881.

To all whom it may concern:

Be it known that I, EDWARD WEs'roN, 0t Newark, in the county of Essexand State of New Jersey, have invented certain new and usefulImprovements in Dynamo-Electric Machines, of which the following is aspecification.

My invention consists in devices to be used with the armature-coils forcon necting the ends to the commutator-segments, as will be understoodby reference to the following description and to the drawings, in which-Figure 1 is an end view of a portion of a commutator; Fig.2, a centralsectional view of a commutator containing my improved devices forconnecting the wires thereto, the latter being shown also in a detailsectional view; Fig. 3, an elevation of a commutator illustrating theinvention more fully.

The commutators represented in the several figures, and those in generalto which the invention is more especially applicable, are composed of agreat number of independent plates or segments, each of which forms oneof the terminals of a coil or loop wound about the armature. Suchcommutators are used with the Gramme type of machines, or with suchmachines as form the subject-matter of Letters Patent granted to meJanuary 14,1879,No. 211,311. In these machines, where the number ofplates is quite large, it is very difiieult to secure the ends of thearmature coils or loops to their respective plates, as the latter arenecessarily very narrow. A series of radial arms, as shown at A, Fig. 1,is therefore generally used, each arm connecting to a plate, as D, andto the ends of the arms the wires are attached by being passed throughsmall slots, and secured by adrop of solder. This, while making a goodconnection, is objectional, from the fact that the commutator can onlybe removed by cutting the wires. To avoid this I make the commutator andconnections as follows:

(No model.)

The ends of the radial arms A are provided with eyes B. To the free endsof the armature conductors are fastened small brass tips the 5 points ofwhich pass through the eyes B and are screwed to the arms A. The tipsare of copper or brass, and are reduced in size along a portion of theirlength to lit in the eyes B. The butts or enlarged portions 0 are split,as at F, and are passed over the flattened ends of the wires, to whichthey are fastened by solder or compression. The tips are held in theeyes by screws E. By this means perfect contact is secured between thearmature-coils 5 and the commutator, while the latter is capable of easyremoval, and may taken off and put on at any time by simply taking outthe screws E.

The specified means of connecting the wires to the tips and the latterto the com mutatorsegments is capable of being modified in many respectswithout departing from the invention, which is summarized in thefollowing claims.

\Vhat I claim as new, and desire to secure by Letters Patent, is

1. The combination, with the armature-coils ot' a dynamo-electricmachine, of commutatorsegtneuts D, radial arms A, and metallicconnecting-tips attached to the free ends of the wires composing thesaid coils, and fitted to eyes in the radial arms, and adapted forconnection therewith by means of clamping or binding screws,substantially as described.

2. The combination of segments I), radial 7 arms A, having eyes B at ornear their ends, with connectingpins 0, attached to the free ends of thearmature-coils, and fitted to and fastened in the eyes B by means ofscrews E, as and for the purpose set forth.

EDWARD WESTON.

Witnesses:

HENRY HINE, 'W. STANLEY, Jr.

